N-(2-Hydroxy-4-methoxybenzylidene)-p-butylaniline
- Formula: C18H21NO2
- Molecular weight: 283.3648
- IUPAC Standard InChI: InChI=1S/C18H21NO2/c1-3-4-5-14-6-9-16(10-7-14)19-13-15-8-11-17(21-2)12-18(15)20/h6-13,20H,3-5H2,1-2H3/b19-13+
- IUPAC Standard InChIKey: DFUYRNLWIOXVQP-CPNJWEJPSA-N
- CAS Registry Number: 30633-94-4
- Chemical structure:
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Phase change data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
DH - Eugene S. Domalski and Elizabeth D. Hearing
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 317. | K | N/A | Sorai and Seki, 1971 | DH |
| Quantity | Value | Units | Method | Reference | Comment |
| Ttriple | 314.52 | K | N/A | Sorai and Seki, 1973 | Uncertainty assigned by TRC = 0.02 K; TRC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 24.405 | 314.52 | Sorai and Seki, 1973, 2 | DH |
Entropy of fusion
| ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 71.24 | 314.52 | Sorai and Seki, 1973, 2 | DH |
Temperature of phase transition
| Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|
| 337.5 | liquid | liquid | Sorai and Seki, 1971 | Nematic mesophase to isotropic.; DH |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.8874 | 335.65 | liquid | liquid | Sorai and Seki, 1973, 2 | DH |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 2.64 | 335.65 | liquid, Nematic | liquid, isotropic | Sorai and Seki, 1973, 2 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Sorai and Seki, 1971
Sorai, M.; Seki, S.,
Glassy liquid crystal of the nematic phase of N-(o-Hydroxy-p-methoxybenzylidene)-p-butylaniline,
Bull. Chem. Soc. Japan, 1971, 44, 2887. [all data]
Sorai and Seki, 1973
Sorai, M.; Seki, S.,
Heat capacity of N-(o-hydroxy-p-methoxybenzylidene)-p-butylaniline: A glassy nematic liquid crystal,
Mol. Cryst. Liq. cryst., 1973, 23, 299. [all data]
Sorai and Seki, 1973, 2
Sorai, M.; Seki, S.,
Heat capacity of N-(o-hydroxy-p-methoxybenzylidene)-p-butylaniline: a glassy nematic liquid crystal,
Mol. Cryst. Liq. Cryst., 1973, 23, 299-327. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point Ttriple Triple point temperature Ttrs Temperature of phase transition ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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